Concrete-mold.



0. H. F. DYHRKOPP.

CONCRETE MOLD.

APPLICATION FILED JULY 11, 1911.

1 1,036,468@ PatentedAug.20,1912.

2 MEETS-SHEET l INVENTOI? A TTORIVE Y 8 2 SHEETSSHEET Z.

Patented Aug. 20, 1912.

CONCRETE MOLD.

G. H. F. DYHRKOPP.

ATTORNEYS IUHIHP H QUNFQ Wzb p CHRISTIAN H. F. DYHRKOPP, 0F SPENCER, IOWA.

CONCRETE-MOLD.

Specification of Letters Patent.

Patented Aug. so, rare.

Application filed July 11, 1911. Serial No. 637,884.

An object of this invention is to providea mold having uprightposts for supporting the mold boards, secured together by ties which are tapering, so that they can be readily knocked out without disturbing the material of which the Wallis formed, and further, so that they can be replaced in the openings thus formed readily without jamming. f

A further object of this invention is to provide a mold for making walls of concrete, cement or the like, which will be sim- 7 ple in construction, inexpensive to manufacture, strong, durable, and readily set up in place and easily detached and taken down.

These and further objects, together with. the construction and combination of parts,-

will be'more fully described hereinafter and particularly set forth inthe cla'ims.

Reference is to be had to the accompanying drawings forming a part of this specification, in' which similar characters of reference indicate corresponding parts in all the views, and in which- Figure 1 is a side view in elevation, showing the arrangement for the; first tier-of the.

wall; Fig. 2 is a view' similar to Fig.1,"

showing the arrangement for the upper tiers; Fig. 3is a fragmentary'top plan view; Fig. 4 is a verticaltransverse section; Fig. 5

is a detached perspective view of one of the uprights or posts; Fig.6 .is a fragmentary perspective view; and Fig. 7 is a detached perspective view of one of the ties.

Referring more particularly to the separate parts of this invention as embodied in the form shown in the drawings, 1 indicates the base wall, formed of concrete or the like,-

which is utilized to form a support for the v I bottom of the post, there may be provided otherties 14, arranged at suitable spaced mold inbuilding the first-tier.

. 2 indicates one: of the lower tiers, which is likewise utilized to form a support for the mold, in building theupper tiers of the side by tapping on the narrow end of the tie and forcing it out through the wedge-shaped opening thus provided. This tie is used to. secure at the bottom two parallelly-disposed posts 4: and 5, arranged'in spaced relation from each other, corresponding to the thickness' of the wall desired, and forming uprights to support the mold'boards 6 and 7 of the mold, the posts being rabbeted at 37 for this purpose. Of course, it is to be under stood that the number of ties 3 and upright posts 4 and 5 may be more than one,-and. may be arranged at suitable spaced inter vals, according to the length of wall 'it is desired to construct at a single operation. It is desirable that the ties 3 should be of sufficient linear ma itude to project on both sides beyond t e-exposed surfaces of the posts 4 and 5, so that these posts can be secured to the ties and to'cach other by pins I or spikes 8 passing through any .one of a plurality of apertures'9; in the ties 3, and either facethe outer-side of-the posts '4: and

suitable supports for scaffolding, indicated indotted lines, whereby the material be placed betweenthe 'mold boards, and also the'workmen, if desired, can be supported in juxtaposition to the mold, :It will be noted by reference to Figs. 1, 2, and '5, that the bottom end of each post is bifurcated by a slot 10,, so as to form two forks lland 12, which are adapted to'-extend on opposite sides ofthe tie 3, and can beinserted thereon from above. I Suitable bearing plates 13 may be provided on the face of the posts, against which the'pins 8 may rest. One of the plates '13 forms a reinforcement for the bifurcation of. the post, toprevent its splitting as clearly shown inFig.5. 1 r

In addition to the ties 3. arranged at the intervals from each other and from'the ties posts and through the mold boards, suitable openings, indicated atl5, are provided, and the posts may be reinforced by facing plates 16 at the location ofthese openings, as mentioned in connection with the bifurcated portions of the posts. In order to hold the posts in alinement, there may be provided a plurality of longitudinally-extending bars 17 and 18, extending in back of the mold boards 6 and 7 and engaging ribs 19 provided thereon. These .bars 17 and 18 are supported on the posts 4 and 5 by means of suitable hangers 20, which in this instance are shown in the form of U-shaped members, bent, with an intermediate portion eX- tending at right-angles to two portions arranged iii-parallel spaced relation with respect to eachother, so as to form a step, the legs of which may extendover suitable pins or spikes 21 passing through openings provided in the posts 4 and 5 at verticallyspaced intervals.

The mold boards 6 and 7 may be provided with a facing sheet 22 of any suitable material, such as sheet-metal,- which will'give the desired finish to the surface of the wall.

In addition to the ties mentioned, the top edges of the mold may be secured together by braces 23, provided with adjustable screw pins 24, which engage in sockets 25 prgvided at the upper ends of the posts A an 5.

It will thus be seen that there is provided I a simple and inexpensive mold, which can be readily setup inplace, either at the base to form a first tier of the wall, or upon one of the previously-formed tiers to form an upper tier, which will be simple in' construction, readily accessible, and easily detached and taken down after the section of the" wall has been completed.

While I have shown one embodiment. of

. my invention, I do not wish to be limited be protected in various changes, alterations and modifications which may come within.

the scope of the appended claims.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. The combination with spaced posts, of ties for securing said posts together, said posts being bifurcated at their lower ends to engage said ties, pins passing through said ties, for securing said posts from movement relative to each other, mold boards supported on said posts, hangers supported on said posts, ribs on said mold boards, longitudinally-extending bars supported by said hangers and engaging said ribs to sup port said mold boards, a brace for securing the tops of said posts together, said tops of said posts having sockets extending longitudinally in the outer faces of the posts, and pins on said brace engaging said sockets.

2. A mold comprising spaced posts, a tie for securing said posts together, mold boards supported on the posts, said posts being provided with series of transverse openings arranged to extend parallel with the mold boards, supporting members adapted to be extended through selected ones of said openings, U-shaped hangers formed of wire and having their extensions provided with offset portions adapted to engage the selectively positioned supporting members, and longitudinal bars dis-.

posed within, and'supported by, said hangers, said bars bearing against portions of said mold boards between the posts.

, Initestimony whereof I have'signed my name to this specification in the presenceof two subscribing witnesses.

CHRISTIAN-H. FQDYHRKOPP.

' Witnesses:

J. 'A.- MILLER, J. E.'STEELE. 

